Tire and combination tire protector and antiskid device



A rin, 1925.

F. MARKWICK TIRE AND COMBINATION TIRE PROTECTOR AND ANTISKID DEVICE Filed Mayl'Y. 192-3 4 Sheets-Sheet 1 Witmeo April 7, 1925.

- F. MARKWICK TIRE AND COMBINATION TIRE PROTECTOR AND ANTISKID DEVICE Filed May 17. 1923 4 Sheets-Sheet 2 April 7, 1925.

F. MARKWICK TIRE AND COMBINATIGN TIRE PROTECTOR AND ANTISKID DEVICE Filed May 17. 1923 4 Sheets-Sheet z I IE- 5 anoentoz E Maria/12% v alter/Mega April 7, 192sf- F. MARKWICK TIRE AND COMBINATION TIRE PROTECTOR AND ANTISKID DEVICE Fi1ed May 17. 1923 Patented Apr. 7, 1925 UNITED .STA

Trim AND.

T 0 all whom it may Be it known that L FRED a citizen of the Uni TES FREDMARKWEGK;

animation-flied ma 17, 1923.

concern:

'lt sniiwron,

ted States, residin at Detroit, in the county of vl ayne and otate of Michigan, have anduseful Improvements in T bination Fire Protector invented certain new res and Coinvices; aiidI do declare the following to be a full, clear, and exact descriptiono'f the invention, such in the art to which it use the same.

as will enable others skilled appertains to make and This invention relates to an improved tire and device for'pro'tectiiig the tire from wear and forpreventing skidding and permitting the tire to have a good grip upon soft and muddy roads.

One object o'fthe tecting device may tially extending seat invention is to provide formed in the tire and be held against transverse movement and further held against tially about Anotherobject of the invention is to so construct this tire that the means for retaining the protector in place may pass through side channels in the tire and thus constitute the means for holding the protector against movement circumferentially of the tire.

Another object of the invention is to so construct the attachment that it may be formed of a plurali ty of plates connected by links which will permit of the protector fitting snugly withi the tread Another object of construct this protector portion of n the seat formed in the tire. the invention is to so that it may be formed ofany desired width and of a suitable length by simply providing the proper number of plates and connecting links.

Anotherobject ofthe invention is to provide the plates with improved calks which are to engage the ground and protect slipping, the plates having an improved struction of calk-receivin'g sockets aiidithe sockets and the cal s being so the calks will be tightlv sockets so that they but may be removed ones putin place.

v Another object of videa protector and will. serve not only to slipping-but further formed that u wedged in the will be firmly inplace when desired and new the invention is topi'oanti-skid device which protect the tire, against serve to protect it from and Antiskid DG'.

movement circumferen,

the tire.

PATENT oreon.

or nnrno ir, MICHIGAN.

COMBINATION TIRE zeno'rnorron Ann nivrrsi 'rn nnvicn.

Fig. 1'.

Figure 4L is a view sim lar to Fig. 1 showing the invention applied to a pneumatic tire in place of a solidtire.

Figure 5 is a transversesectional view taken valongthe line 5- 501 Fig. 4. V Figure 6 is anenlarged plan view showing a portion of the protecting :device and disclosing one form of plate which may be used Figure 7 is 'a similar .view showing another form of plate which may be used.

Figure 8 is a view similar to Figs. 6 and 7 and disclosing a formot protector which will be preferably usedwhen the proused in connection with tires narrow tread port-ion.

longitudinal sectional view 9*9 of Fig. *8. I

of one of the tector is to be having a very Figure 9 is a taken-along the line Figure 10 is a plan "view plates shown in Fig. 8

Figure 11 is av sectional the line 11'11 of Fig. 10.

.Figure 12 is an enlarged plan 'view'showing one of the rowsotplates usedin Fig. 7. Figure 13 is a longitudinal sectional'view taken along the line 1313 of Fig. 12.

Figures 14:, 15and 16 .are views'showing calks formed of different materials.

Figure 17 is plate provided with calk-receiving seat.

Figure 18 is a view similar to Fig. '1'! with a calk fitting into the calk-i'eceiving seat. v

The tire which may be a solid tire such as used upon trucks or a pneumatic tire suc as may be used upon pleasure cars will'be carried by a conventional structure of'tirecarryingrim. In Figs. 1, 2 and3, the tire has been indicated view taken along a modified form of The.rim shown in F gs. 1 2 and 3wi1l be a sectional view through a directly engaged by the spokes of the wheel, whereas in Figs. 4 and 5 this rim fits upon the telly 6 which is engaged with the outer ends of the spokes 7. The tire which, as previously explained may be a solid tire or a pneumatic tire has its tread portion recessed to provide a circumferentially extending seat 8 and side ribs or flanges 9 and the tire has its side walls provided with channels 10 which extend radially of the wheel and tire and communicate with opposite-side portions of the channel 8. Byproviding the circumferentially extending seat in the tread portion of the tire and the radially extending. channels 10 in the side portions, the pro tector and anti-skid device may be put in place about the tire and this protector will be held against transverse movement with only the calks extending beyond the side ribs 9. When the fasteners are put in place, they will fit within the channels and will serve not only to hold the protector in place about the tire but will also serve to prevent it from moving circumferentially of the tire.

The protector and anti-skid device will be formed as a strip or pad which will be of the proper length to extend about the tire and of the proper width tofit snugly in the seat 8 between the side ribs or flanges 9. This pad or strip will be formed of aplurality of plates which may be of the proper width to just fit between the ribs 9 as shown in Figs. 6 and 8 or it may be formed of a plurality of rows of plates which when connected by the links will form a pad of the proper width. The plates 11 which are used in the form shown in Fig. 6 are elongated and extend transversely of the pad or strip and each is provided intermediate its length with a cutout 12 and adjacent its ends with cutouts 13 thus providing side bars let and end bars 15. These side bars 14 are engaged by the flat links 16 and it will be readily seen that a pad will be provided in which the plates will be connected in a very efficient manner but at the same time will be permitted to have suflicient movement towards and away from each other to cause easy riding. The end bars have been provided so that in case it is desired to use. pads of this type with very wide truck wheels, two or more of the strips may be used and the strips con nected by links which will be similar to the links 16 and will connect the ends bar of adjacent plates of the pad.

In the form shown in Fig. formed of a plurality of plates 17 which are shorter than the plates 11 and are arranged in rows, the plates of each row being connected by links 18 similar to the links 16 and the rows of plates being connected by links 19. Each of the plates 17 has its end portions provided with cutouts 20 thus forming side bars 21 and end bars 22 for engagement by the links 18 and 19. It will be obvious 7, the pad is that the pad or strip may be formed of any length desired and of any width by simply multiplying the number of plates in a row and providing the desired number of rows.

In Fig. 8, there has been shown a modified construction for use in connection with a tire having a very narrow tread which will have a seat of only sufficient width to receive one row of plates. These plates 23 are similar to the plates 17 but instead of the links 18 being provided to engage side bars 21, the plates will be positioned with the side bars 2 extending longitudinally of the strip or pad and the end bars 25 will be connected by a plurality of links 25. illustration, two links 25 have been provided to connect each pair of plates and in the preferred form, the links willbe put in place with one link having its unconnected ends positioned externally. of the pad and the other link with its unconnected ends positioned internally to engage the tread of the tire. It will be understood however that both the links may be made solid or with their ends welded when the device is constructed for use on trucks or heavy cars. It should be also noted that in this specific type the portion of the plate between the cutout is narrower than in the form shown in Figs. 6 and 17 and in Fig. 12. i

It is desired to have this device obtain a In the present very good grip upon a muddy road or wet pavement and therefore each of the plates has been provided with a calk-receiving socket 26 which is positioned intermediate the cutouts and extends beyond the inner and outer faces of the plates. These sockets have thick walls as shown in the sectional views and it would be noted that these sockets are tapered as shown clearly in Figs. 11 and 1' so that the ca-lks ma be wedged into place and thus prevented from work:- ing loose. In the specific form shown in 11, the socket tapers outwardly and the calks 27 will have a similar taper so that they may be passed into the sockets from the inner ends thereot'and forced outwardly until firmly seated. When in place. the inner ends of the calks will be flush with the inner ends or the sockets as shown in 9 so that they will not dig into the tread portion of the tire but the outer ends of the calks will extend so that they may have a good grip upon the road or pavement. These calks may be formed of any suitable material and in Figs. 14, 15 and 16, they have been shown formed respectively of rubber, metal and wood.

In the form shown in Figs. 17 and 18, there has been shown a modified form of socket and calk in which the socket tapers inwardly instead of outwardly and the calk is similarly tapered and is inserted from the outer end of the socket instead of the inner end. It should be further noted that this calk 29 has its outer end portion tapered to a point. These calks 29 will be preferably formed of steel and have been given the shape disclosed so that they can have a very firm grip upon a road which may be covered with ice or may be frozen into a hard mass. When this protecting pador strip is put in place, it is passed about the tire within the seat 8 and will have its ends secured by links similar to those which connect the plates forming the pad. It is of course obvious that any other form of fastener may be employed if so desired. After the pad or strip has been secured about the tire, the yokes 30 will be put in place across the rim 2 or felly 6 as shown in Figs. 2 and 5, and the chains 31 will be extended through the channels 10 and connected with the plates of the pad at the sides thereof. These chains and yokes will serve to hold the pad in place about the wheel and will further serve to prevent the pad from having undesired movement circumferentially about the wheel. c

From an. inspection of Figs. 2, 3 and 5, it

will be readily seen that when the pad is put in place, it will serve to protect the tire from direct contact with the road and therefore the tire will be prevented from becoming unduly worn.

These protectors are intended to be kept upon the tires at all times, but it will be obvious that the calks'may be removed and different ones put in place according to the conditions of the weather.

I claim:

1. A tire having its tread portion provided with an anti-skid chain receiving seat extending circumferentially about the tire and having the side portions of the tire provided with channels communicating with the chain seat to receive anchoring means for the anti-skid chain.

2. The combination with a tire having its tread portion provided with a circumferential seat and its side portions provided with channels communicating with said seat,

of an anti-skid device positioned in said seat, and anchoring means connected with said anti-skid device and engaged with said channels.

3. The combination with a tire having its tread portion provided with a seat extending circumferentially of the tire and of less width than the tread, the side portions of the tire being provided with channels extending radially and communicating with the said seat, of an anti-skid device posi-v tioned in said seat and extending about the tire, and anchoring means for said anti-skid device including yokes for extending trans- "crsely across a tire carrying rim, and means for extending through said channels and connecting the end portions of said yokes with opposite side portions of said anti-skid device. 1

4. The combination with a tire having its tread portion provided with a seat extending circumferentially of the tire and of less width than the tread, the side portions of the tire being provided with channels extending radially and communicating with the said seat, of an anti-skid device positioned' in said seat and extending about the tire, and anchoring means for said anti-skid device having portions extending through said channels and connected with opposite sides of the anti-skid device to hold the anti-skid device against movement circumferentially of the tire.

5. An anti-skid device comprising an elongated strip to be secured circumferentially about the tread portion of a tire, said strip being formed of a plurality of plates each having cutouts in its end portions to provide bars and each having a socket intermediate its length and width, ground engaging calks fitting into said sockets and projecting beyond the outer ends of the sockets, and links extending between the plates and engaging said bars to retain the plates in strip-forming relation to each other.

6. An anti-skid device comprising an elongated strip to be secured circumferentially about the tread portion of a tire, said strip being formed of a plurality of plates, sockets carried by said plates and extending beyond the inner and outer faces of the plates, calks fitting in said sockets and links connecting said plates in strip-forming relation to each other.

In testimony whereof I have hereunto affixed my signature.

FRED MARKWIGK. 

